EP3808593A1 - Sitz mit umklappbarer rückenlehne, der mit feststehenden armlehnen ausgestattet ist - Google Patents

Sitz mit umklappbarer rückenlehne, der mit feststehenden armlehnen ausgestattet ist Download PDF

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Publication number
EP3808593A1
EP3808593A1 EP20199974.5A EP20199974A EP3808593A1 EP 3808593 A1 EP3808593 A1 EP 3808593A1 EP 20199974 A EP20199974 A EP 20199974A EP 3808593 A1 EP3808593 A1 EP 3808593A1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
arm
segment
facing position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20199974.5A
Other languages
English (en)
French (fr)
Other versions
EP3808593B1 (de
Inventor
Gregor Hewak
Loic Bezeault
Jerome This
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP3808593A1 publication Critical patent/EP3808593A1/de
Application granted granted Critical
Publication of EP3808593B1 publication Critical patent/EP3808593B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/0224—Non-manual adjustments, e.g. with electrical operation
    • B60N2/02246—Electric motors therefor
    • B60N2/02253—Electric motors therefor characterised by the transmission between the electric motor and the seat or seat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access
    • B60N2/203—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access taking a position opposite to the original one
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/75—Arm-rests
    • B60N2/753—Arm-rests movable to an inoperative position

Definitions

  • the present invention relates to a reversible seat with fixed armrests.
  • Requirement US7281761 refers to a reversible seat capable of changing from a forward facing position to a rearward facing position. This transformation of the seat is carried out by means of a translation of the backrest along the seat.
  • a seat according to the invention makes it possible to switch from a position facing the road to a position rearward facing the road with simplicity and speed, by making the rearward facing position more comfortable than the facing forward position.
  • X is a front-rear longitudinal axis of the vehicle oriented towards the rear
  • Y is a transverse axis directed towards the right of the vehicle
  • Z is a vertical axis directed upwards.
  • the subject of the invention is a vehicle seat comprising a seat and a reversible backrest, said seat being able to change from a position facing the road to a position rearward to the road.
  • the seat comprises two arms each having a first end mounted to pivot about an axis of the backrest and a second end mounted to pivot about an axis of a fixed structural element placed under the seat, said seat being able to move from the forward facing position to in which the backrest is placed on one side of the seat and the arms are arranged along said seat, in the rearward-facing position for which the backrest has been moved to an opposite side of the seat under the effect of a pivoting of the arms around the structural element, said arms transforming into an armrest during this pivoting.
  • a seat according to the invention goes from a position facing the road for which it has no armrests to a position rearward to the road for which it is provided with armrests. It should be noted that between these two positions, the seat can either remain fixed or pivot. It is advantageously assumed that the backrest moves along a longitudinal axis of the vehicle and therefore that the side of the seat and the opposite side of said seat between which the seat moves are aligned along a longitudinal axis of the vehicle. In the forward-facing position, the two arms are arranged along the seat and backrest and therefore do not protrude from the seat or the backrest. For this configuration, the two arms have no particular function.
  • the two arms pivot, causing the backrest in their movement, this pivoting placing the arms directly in a configuration of armrests.
  • the arms retain their initial shape and do not undergo any structural modification.
  • These arms therefore have a dual function: that of transforming into armrests and that of serving as rotating members for the backrest between the position facing the road and the rear facing the road.
  • the axis of rotation of the backrest and the axis of rotation of the structural element are parallel and extend in a transverse direction of the vehicle.
  • the arms can take any shape and laterally border the seat so that an individual who would be seated on said seat can rest each of his arms on an armrest.
  • each arm retains the same shape as the seat is found in the position facing the road or back to the road, only its orientation in space changes between said two positions.
  • the backrest has two substantially parallel faces, in the position facing the road, the occupant's back being intended to come into contact with one of said faces, and in the position facing the road. rearward facing position, the occupant's back being intended to come into contact with the other face of said backrest.
  • the seat tilts from one side of the seat to an opposite side of said seat, keeping the same orientation in space.
  • one of the two faces is located behind the other face in the forward facing position of the seat, it will remain behind said face when the seat has tilted into the rearward facing position.
  • the backrest will have a rear face and a front face.
  • the backrest In the forward facing position, an individual will be seated against the front face of the backrest and in the rearward facing position said individual will be seated against the rear face of the backrest.
  • the backrest In these cases, the backrest is reversible because its two faces will be used to come into contact with the back of an occupant depending on the position of the seat.
  • the term occupant designates a person who would be seated on the seat.
  • the backrest in the forward-facing position the backrest protrudes above a rear zone of the seat and in the rearward-facing position the backrest protrudes above a front zone of said seat.
  • the concepts of “rear” and “front” are to be considered in relation to a longitudinal axis of the vehicle.
  • the backrest in the forward-facing position the backrest rests on the rear zone of the seat, causing the front part of the seat to rise, in the rearward-facing position the backrest coming from rest on the front zone of the seat, causing the rear zone of said seat to rise.
  • the part of the seat which is furthest from the backrest is slightly raised, making it possible to increase the seating comfort on the seat.
  • the seat is pivoted by inertia, under the effect of the weight of the backrest.
  • each arm has a first rectilinear segment, a free end of which corresponds to the first end of the arm, and a second rectilinear segment in continuity with said first segment and of which a free end corresponds to the second end of the arm.
  • said two segments forming between them an angle of between 90 ° and 135 °.
  • the first segment is able to pivot around the axis of the backrest and the second segment is able to pivot around the axis of the structural element.
  • the first segment in the forward-facing position the first segment is aligned with the backrest and the second segment is aligned with the seat, in the rearward-facing position the first protruding segment of the backrest at- above the seat and the second projecting segment of the structural element in a vertical direction.
  • the arms in the forward-facing position the arms are arranged along the seat without creating additional volumes, and in the rearward-facing position the two arms have rotated to turn directly into armrests.
  • the first segment in the rearward facing position, the first segment extends in a substantially horizontal direction at plus or minus 15 ° and the second segment extends in a substantially vertical direction at plus or minus 15 °.
  • the first segment of each arm of the seat will support the arm of an occupant who would be seated on said seat.
  • the seat comprises for each arm, a first motorization placed in the backrest and intended to cause said backrest to pivot around the first end, the seat comprising a second motorization placed on the backrest. the structural element and intended to rotate the arm around the second end relative to said structural element.
  • the first motorization and the second motorization are each constituted by a jack associated with an electric motor.
  • This is an example of a motorization particularly suitable for a seat according to the invention but which is in no way limiting.
  • each arm covers a first toothed wheel secured to the backrest and materializing the first end of the arm, a second toothed wheel secured to the structural element and materializing the second end of the arm, a third intermediate wheel located between said first and said second toothed wheels at the elbow defined by the two segments, and a belt connecting the first and the second wheels passing through the third wheel
  • said seat comprising a motorized jack provided of a rod, one end of which is in contact with a secondary belt placed around the second wheel, a translation of the rod causing a displacement of the secondary belt causing a rotation of the second wheel which induces a displacement of the wall and therefore a simultaneous pivoting of the arm and the backrest .
  • each arm is associated with a jack provided with a rod, a first link and a second link provided with a slot, a first end of the first link being pivotally mounted around the axis of the structural element and a second end of said link is inserted into the slot, and a first end of the second link is pivotally mounted around the axis of the backrest, a free end of the cylinder rod being pivotally mounted at a fixed point of the second segment.
  • the second end of the first link is provided with a lug which is inserted into the slot, said lug being configured so that it cannot be removed from the slot.
  • a seat according to the invention has the advantage of changing from a position facing the road to a position rearward to the road, while maintaining a constant size within the vehicle. It also has the advantage of involving two arms which have a dual function, that of transforming into armrests for the rearward facing position, and that of serving as rotating members for the backrest in order to move from a forward facing position to rear facing position and vice versa. The result is that a seat according to the invention uses a small number of parts, thus limiting the costs and the risks of malfunction when switching from one position to another position.
  • a seat 1 comprises a seat 2 and a backrest 3 and is able to move from a position facing the road as illustrated in figure 1 rearward facing position as shown in figure 2 .
  • a position facing the road is a standard seat position, for which a person who would be seated on said seat would view a scene placed in front of the vehicle, in the direction of travel of said vehicle. In the rearward facing position, the person who would be seated on said seat would visualize a scene placed behind the vehicle in a direction which would be opposite to the direction of travel of the vehicle.
  • the seat 2 and the backrest 3 each have a structure which is covered by a foam and a filling.
  • a seat 1 comprises two lateral arms 4, 5 each comprising a first rectilinear segment 6 and a second rectilinear segment 7 extending said first segment 6. These two arms 4, 5 are aligned along a transverse axis Y of the vehicle and laterally border the seat 1.
  • the two segments 6, 7 of the same arm 4, 5 form between them an angle which is greater than or equal to 90 °, and preferably an angle of between 90 ° and 135 °, said two segments 6 , 7 being fixed relative to each other and defining a fixed, irremovable structure.
  • a free end 8 of the first segment 6 is mounted to pivot about an axis integral with the backrest 3 which is parallel to a transverse axis Y of the vehicle.
  • a free end 9 of the second segment 7 is pivotally mounted about an axis integral with a structural element 10 of the base 2 of the seat 1 which is located under the base 2 of said seat 1, said axis being parallel to a transverse axis Y of the vehicle.
  • each of said two arms 4, 5 is pivotally mounted on both the backrest 3 and on the structural element 10.
  • Each arm 4, 5 has a metal structure and an outer covering of textile or plastic type.
  • the backrest 3 has a front face 11 and a rear face 12 which are substantially parallel, that is to say parallel to plus or minus 15 °, each of said faces 11, 12 being brought to come to the fore. contact of the back of a person who is sitting on the seat 1, depending on whether the seat 1 is in the forward-facing or rear-facing position.
  • the seat 2 in the forward-facing position, the seat 2 is inclined so as to present a raised front zone 13 and the backrest 3 rests on a rear zone 14 of said seat 2 while being slightly inclined towards the rear with respect to to a vertical direction.
  • the two arms 4, 5 are arranged along the seat 1 so that the first segments 6 are aligned along the backrest 3 and the two second segments 7 are horizontal and extend along a longitudinal axis X of the vehicle. In this position facing the road, the back of a person who would be sitting on said seat comes into contact with the front face 11 of the backrest 3.
  • the two arms 4, 5 are rotated forward about the axes integral with the structural element 10. During this rotation, the two arms 4, 5 cause the backrest 3 to move forward. of the seat 2 while maintaining its orientation in space. Indeed, during this movement, the backrest 3 pivots slightly around the first segment 6 of each arm 4, 5 while maintaining the front face 11 in front of the rear face 12.
  • the amplitude of rotation of the backrest 3 is delimited by the two edges. rectilinear 17, 18 delimiting a notch 19 made in said backrest 3.
  • each arm 4, 5 In the forward facing position, the first segment 6 of each arm 4, 5 bears against one of said two edges 17, 18 of the notch 19 and when the seat is in the rearward facing position, said first segment 6 is found resting against the other edge 17, 18 of said notch 19.
  • the two edges 17, 18 of the notch 19 make an angle of approximately 55 ° between them.
  • each arm 4, 5 thus pivots by an angle greater than or equal to 90 °, and preferably by an angle of between 90 ° and 135 °.
  • the first segments 6 of the two arms 4, 5 extend above the seat 2 along a substantially horizontal and longitudinal axis X of the vehicle, while the two second segments 7 extend parallel to the backrest 3 by being placed behind said first segments 6.
  • the two arms 4, 5 are comparable to two armrests, the first segments 6 of said arms 4, 5 serving to support the arms of a person who would be seated on said seat 1.
  • the backrest 3 In the rearward facing position, the backrest 3 is found resting on the front zone 13 of the seat 2, which has itself pivoted about a horizontal and transverse axis Y of the vehicle, so as to raise its rear zone 14.
  • the pivoting of the seat 2 being carried out by inertia under the effect of the weight of the backrest 3.
  • the backrest 3 is equipped with a headrest 15, it is necessary to move said headrest 15 on the backrest 3 of the seat 1 between the position facing the road and the rear facing the road.
  • the headrest 15 when the seat 1 is in the forward-facing position, the headrest 15 is tilted slightly forward with respect to the backrest 3 of the seat 1.
  • the headrest 15 With reference to the figure 2 , when the seat 1 is in the rearward facing position, the headrest 15 must be tilted slightly towards the rear of the backrest 3.
  • This change in position of the headrest 15 between the two positions of the seat 1 can be done manually by moving the headrest along curved rails placed at the top of the backrest 3. This change can also be achieved by means of a control element associated with a motor.
  • seat 1 To switch from a forward-facing configuration to a rear-facing configuration, seat 1 retains the same size along a transverse Y axis of the vehicle and also retains the same size along a longitudinal axis X of the vehicle, except that said size is slightly translated along said longitudinal axis.
  • the change from one position to another for the seat 1 can be done either manually by grabbing the backrest 3 and tilting it to the other side of the seat, or automatically by means of a control device. associated with an engine.
  • each arm 4, 5 serves as a housing for a pivoting mechanism of said arms 4, 5 and of the backrest 3 to move from a position of the seat 20 facing away from the road in a rearward facing position.
  • This mechanism comprises a first toothed wheel 21 fixed to the structure of the backrest 3 and able to pivot around the axis integral with the backrest 3, a second toothed wheel 22 fixed to the second segment 7 of each arm 4, 5 and able to pivot around of the axis integral with the structural element 10 of the seat 2 and a third toothed wheel 23 placed at the level of the elbow created by the two segments 6, 7 of each arm 6, 7.
  • This third wheel 23 is placed between the first 21 and the third wheel 23 and is adapted to pivot inside each arm 4, 5.
  • a tensioning roller 31 is placed near the third wheel 23.
  • a belt 24 is threaded around the first wheel 21 and of the second wheel 22 and comes to bear against the third wheel 23 and against the tensioner roller 31, said third wheel 23 and said roller 31 serving as an angle transmission for said belt 24. It should be noted that the third wheel 23 is placed inside the belt 24, while the tensioner roller 31 is placed at the outside of said belt 24.
  • an electric jack 25 is fixed to the structural element 10 of the seat 2.
  • This jack 25 has a body 26 from which protrudes a rod 27, a free end 28 of which bears against a secondary belt 29 which is threaded around it. the second wheel 22 and which is attached thereto.
  • One end 30 of the body 26 which is opposite to that through which the rod 27 projects is pivotally mounted about an axis integral with the structural element 10 of the seat 2. In this way, the jack 25 can pivot around said.
  • axis and rod 27 of said cylinder 25 can slide in body 26 to project more or less significantly from said body 26.
  • the triggering of the jack 25 will cause a rotational movement of the secondary belt 29, which will induce a rotation of the second wheel 22 to which said secondary belt 29 is secured.
  • the setting in rotation of the second wheel 22 will cause a setting in rotation of the first wheel 21 via the third wheel 23 and the tensioner roller 31.
  • a simultaneous setting in rotation of the second 22 and of the first wheel 21 causes simultaneous pivoting. of the arm relative to the structural element 10 of the seat 2, and of the backrest 3 relative to said arm 4, 5.
  • the seat 20 is found in the rearward facing position.
  • the position of the headrest 15 between the forward facing position and the rearward facing position is adjustable independently of the pivot mechanism.
  • the seat 40 has a mechanism for pivoting the arms 4, 5 to change from the forward-facing position to the rearward-facing position, involving a electric actuator 41, a first link 42 and a second perforated link 43, provided with an elongated slot 44.
  • the two links 42, 43 are elongated and the slot 44 extends along a longitudinal axis of the second link 43 , over less than half of the total length of said second link 43.
  • a free end 45 of the first link 42 is pivotally mounted about the axis integral with the structural element 10 of the seat 2.
  • a free end 46 of the second link 43 is pivotally mounted around the axis integral with the backrest 3.
  • the actuator 41 has a body 48 and a rod 49, one of which mity free is secured to the second segment 7 of each arm 4, 5.
  • a front end 50 of the body 48 is pivotally mounted about an axis parallel to a transverse axis Y of the vehicle.
  • the jack 41 is placed in front of each arm 4, 5 at the level of the structural element 10 of the seat 2, and extends in a substantially horizontal and longitudinal direction X of the vehicle.
  • a first motor 61 is fixed to the structure of the backrest 3 to allow said backrest 3 to pivot relative to each arm 4, 5.
  • a second motor 62 is fixed to the structural element 10 of the seat 2 to ensure the rotation of each arm 4, 5.
  • Each motor 61, 62 is advantageously constituted by a rotary actuator associated with an electric motor.
  • a third motor is fixed to the structure of the backrest 3 to ensure the rotation of the headrest 15 when the seat moves from one position to another.
  • a control button preferably placed at the level of the structural element 10 of the seat 2
  • a control button preferably placed at the level of the structural element 10 of the seat 2
  • the actuation of a control button preferably placed at the level of the structural element 10 of the seat 2
  • the third motor making it possible to adjust the position of the headrest 15 on the backrest 3 is triggered independently of the other two motors 61, 62.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
EP20199974.5A 2019-10-17 2020-10-05 Sitz mit reversibler rückenlehne, der mit feststehenden armlehnen ausgestattet ist Active EP3808593B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1911577A FR3102109B1 (fr) 2019-10-17 2019-10-17 Siège à dossier réversible doté d’accoudoirs fixes

Publications (2)

Publication Number Publication Date
EP3808593A1 true EP3808593A1 (de) 2021-04-21
EP3808593B1 EP3808593B1 (de) 2022-08-10

Family

ID=69190969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20199974.5A Active EP3808593B1 (de) 2019-10-17 2020-10-05 Sitz mit reversibler rückenlehne, der mit feststehenden armlehnen ausgestattet ist

Country Status (2)

Country Link
EP (1) EP3808593B1 (de)
FR (1) FR3102109B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US442984A (en) * 1890-12-16 Ors of one-half to charles e
JPS5143512A (de) * 1974-10-09 1976-04-14 Kinki Sharyo Kk
DE29800607U1 (de) * 1998-01-12 1998-08-20 Peter Heinz Sicherheitssystem für Passagiersitze in Flugzeugen, bestehend aus Preßluft-Prallpolstern und einem speziellen Sitz
DE29818906U1 (de) * 1998-10-23 1999-01-07 Duewag Ag Bidirektionaler Fahrgastsitz für Busse und Bahnen
US7281761B2 (en) 2004-05-03 2007-10-16 Ford Global Technologies, Llc Seat configuration system for an automotive interior

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US442984A (en) * 1890-12-16 Ors of one-half to charles e
JPS5143512A (de) * 1974-10-09 1976-04-14 Kinki Sharyo Kk
DE29800607U1 (de) * 1998-01-12 1998-08-20 Peter Heinz Sicherheitssystem für Passagiersitze in Flugzeugen, bestehend aus Preßluft-Prallpolstern und einem speziellen Sitz
DE29818906U1 (de) * 1998-10-23 1999-01-07 Duewag Ag Bidirektionaler Fahrgastsitz für Busse und Bahnen
US7281761B2 (en) 2004-05-03 2007-10-16 Ford Global Technologies, Llc Seat configuration system for an automotive interior

Also Published As

Publication number Publication date
FR3102109A1 (fr) 2021-04-23
FR3102109B1 (fr) 2021-11-12
EP3808593B1 (de) 2022-08-10

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